Form clamp



2 Sheets-Sheet l YNVENTORS C. T. GOUDE ET AL FORM CLAMP Filed March 1926 OJ 2 7. 53 6 Q 3 v W n H 7 U2 .4 8 4a\% v Nov. 8, 1927.

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Nov. 8', 1927. 4 1,648,342 c. T. GQUDE ET AL,

FORM CLAMP I I Filed MaIYnGh 1925 2 Sheets-Sheet 2 NM!- Ln I INVENTORS Patented Nov. 8, 1927. I

CHARLES r. Gonna, or WASHINGTON, DISTRICT or COLUMBIA, AND orro KEL Y, or V-IBLUEMONT, VIRGINIA. I

' r roan CLAMP.

' Application filed March 27, 1926. Serial No. 97,931.

This invention relates'to form-clamps for clamping forms for concrete work and para ticularly to form clamps for column or beam forms, An object of the'inv'ention is to provide an improved "form clampfor column and beam forms. Another object is to provide a form clamp that canbe put in place and tightened by one person'without assistance. Another object is to provide a clamp that will eliminate the use of'timbers or-cleats to hold the parts of the form in place or to prevent the clamps from slipping on the form: Still another object is'to provides. form'clamp all the parts of which are permanently securedtogether so that, the parts can not" be separated or lost while being transported from j'obto job; Other objects will be in part obvious and in part brought out in the'tollowing specification and appended claims. v

' In the accompanying drawings in which we have shown for the purpose of illustration the preferred'embodimentof our in vention." l

" In the drawings I Figure 1 is a plan view ot'ourclamp as applied to a column. v 3 Fig. 2 is a' front elevation of'the clamp as applied to a column.

to'a beam. H

, Fig. 4 is a view of the corner showing the manner of securing the clamping action.

Inthese drawings numerals 1, 2, 3, and 4 indicate the sides of an ordinary column mold in-thiscase of square cross section but thefclamp 'may equally well be applied to forms of rectangular section or the clamps 40 may be made with a larger number of side pieces as forinstance six or eight sldes to clamp forms having that number of sides. The side members of the clamp are indicated at 5, 6, 7, and8. These side members are composed of strips of angle iron notched and slotted as will hereinafter appear and permanently joined at all but one corner by Fig. '3 isa'view or our clamp asapplied' joined to the adjacent clamp member's by'l means of the'links 9 we call the closed ends of the members, while theend which can be opened to permit the clamp to beplaced on the form we call the open end o'fjthe members.

by the links 9. The contacting flanges of the angular clamping members are cutaway.

as at 13 to provide slots for the links '9 to slide in, in order that the links may'move to engage the various notches 12. j

The open corner ofthe clamp is closed by I The sides'of the-clamp are'made adjust I selectively engaged for any desired setting 7 means of a'latch which is formed as follows; 7 the outer edge of the'perpendicular flange ot the open-end of the memberfi is provided with a slant edge as shownat 17, in thisflange' is a series of holes 11 to receive a fastening pin 10. The holes 11 are on a line parallel with the slant edge l7' 'for a purpose later to appear. The flange -ofthe member 8 which contactswith the form is provided with aslot I 18 slmilar to the notches 13 but of very much less length as it does not have to allow for longitudinal adjustment as do slots 18. The. perpendicular flange is provided with a hole 1 1 adjacentthe contacting flange and spaced from the outer end of the slot 18a distance equal to the distance from the slant edge 17 has the additional advantage of being easy to remove when it is desired to remove the clamp from the form, also the head serves as a retaining means to prevent the pin from slipping through the holes and'releasing the 'to the holes 11 so that when the perpendicw clamp prematurely. The slot 13 of the open end of the member 5 is continued to the end of the member to provide an opening instead of a closed end as true of the closed end of the members. This opening allows the perpendicular flange ofthelmember 5 to be passed through the slot 18 ofjthe member 8.

The operation of our device is as follows:

the column being assembled either in place or on a jig, the member 5 is placed on a side of the form, as side 1, and adjusted in such .a manner that oneof the holes 11 is spaced from the edge of the form by a distance equal to the thickness of the contacting 'flange of member 8. Themember 5 is then tacked tothe side of the formkby means of short nails 16. passing through holes provided in the contactingflange of the form members for the reception of such nails. The holes-15 are not-counter sunk but left straight to facilitate access to the heads of the nails to enable them .to be easily removed.

7 After the member v5 has beentacked in place the link 9' connectin the members 5 and 6 is adjusted longitudinally to engage 7 one of the notches 12 to allow the member 6 to be pressed againstthe side 2 by alight I pressure, the. member 7 is likewise adjusted and pressed into place which clamps side 2 between members 5 and 7-with the links 9 and member 6 in tension. Member 8 is then put in place with the-slot 18 over the perpendicular-flange of member 5 and then driving the end of member 8 down against the sidet of the form, theend of the slot 18 rides up the slanting edge 17 pulling the member 8 which in turn pulls the link and through it the, member 7 so that each part of straining wires 19.

' is thoroughly bound together.

Toapply the clamp to a beam formthe element 5 is swung around-out of the Way the clamp is under, tension whereby the form as clearly shown in'Fig. 3, and member passedunder the bottom of the form, the

links 9 are then adjusted so that considerable force is necessary in order to press members 1 claim as new and desire to secure by Letters.

Patent g 1. A clamp'for concrete forms comprising a plurality of side members of angular cross section,-one of the flanges of thei'an'glebein'g adapted to contact with the side of theform while the other flange is adapted tobe at,

right angles to the said form, the said 0011- tacting flanges being cut away adjacent the ends thereof to provide longitudinally extending "slots, one side of said slot beingin the plane of the inner surface of the .per-

pendicular flange, links permanently connecting the said side members at all but one of the. corners of the clamp, the said links passing through the said slots and ,embracing the said perpendicular flange of the two adjacent side members, the said perpendic-ua lar flanges being provided with notches on the outer edges thereof to selectively engage the said links, and a, latch to releasably fasten the remaining or open corner; r I

2. A clamp for concrete forms of rectangular cross section comprising a plurality of side members, linkspermanently connecting the said side members together, said links being adjustable longitudinally along the side members to adapt the clamp to any size form, and means comprising acam surface on the free end of one member,a slot in the free end of the opposite member, and coo erating pin. receivin openings, to releasab y connectthe open en s of the'clamp;

3. A. clamp for concrete forms comprising rigid side members, links topermanently connect said rigid side members at all but one of the corners of the, clamp, means on said rigid side members to adjust their effective length and releasable means to fasten the remaining corner. I

4:. A clamp for concreteforms compriS v ing rigid side members rigid links permanently and adjustably connecting the :said rigid side members at allbut one corner of the clamp 'so that the parts may not be separated or lost, means-integral With the side members. to tighten the clamp on the form and means to permit locking the clamp in place. i I l In testimony whereof, we have hereunto set our hands this 26th day of March, 1926.

CHARLES T. GOUDE. OTTO KELLEY. f 

